Hi there.
I was playing Angel of Impatience and I've found a NanoPack. When I succesfully upgraded my armor I noticed that NanoPack didn't disappear from the floor. I was able to upgrade another items, probably infinite (I tried it only three times on diffrent items). Upgrade was each time succesful and NanoPack still was lying on the floor.
Another (minor) bug I'd like to report: I was playing 0.9.9.0 wersion of DoomRl for a while when 0.9.9.1 was out. I've moved score.wad and player.wad files form 0.9.9.0 directory to 0.9.9.1 game directory and then noticed that in "Player info (Items)" screen the "Total diffrent specials:" count shows the number greater by two than the actual number of diffrent uniques/exotics I've found. At the moment this shows: "Total diffrent specials: 36/36" and I've found 34 of them, two names on the uniques list are still unknown (they're shown as "----").
I hope I've described these two bugs enough properly to fix them.